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Spatiotemporal Variations of Drought and Their Teleconnections with Large-Scale Climate Indices over the Poyang Lake Basin, China

Author

Listed:
  • Weilin Liu

    (Jiangxi Provincial Key Laboratory of Hydrology-Water Resources and Water Environment, Nanchang Institute of Technology, Nanchang 330099, China)

  • Shengnan Zhu

    (Jiangxi Provincial Key Laboratory of Hydrology-Water Resources and Water Environment, Nanchang Institute of Technology, Nanchang 330099, China)

  • Yipeng Huang

    (Jiangxi Provincial Key Laboratory of Hydrology-Water Resources and Water Environment, Nanchang Institute of Technology, Nanchang 330099, China)

  • Yifan Wan

    (Jiangxi Provincial Key Laboratory of Hydrology-Water Resources and Water Environment, Nanchang Institute of Technology, Nanchang 330099, China)

  • Bin Wu

    (Jiangxi Provincial Key Laboratory of Hydrology-Water Resources and Water Environment, Nanchang Institute of Technology, Nanchang 330099, China)

  • Lina Liu

    (Jiangxi Provincial Key Laboratory of Hydrology-Water Resources and Water Environment, Nanchang Institute of Technology, Nanchang 330099, China)

Abstract

The intensity and frequency of droughts in Poyang Lake Basin have been increasing due to global warming. To properly manage water resources and mitigate drought disasters, it is important to understand the long-term characteristics of drought and its possible link with large-scale climate indices. Based on the monthly meteorological data of 41 meteorological stations in Poyang Lake Basin from 1958 to 2017, the spatiotemporal variations of drought were investigated using the standardized precipitation evapotranspiration index (SPEI). Ensemble empirical mode decomposition (EEMD) methods and the modified Mann–Kendall (MMK) trend test were used to explore the spatiotemporal characteristics and trends of drought. Furthermore, to reveal possible links between drought variations and large-scale climate indices in Poyang Lake Basin, the relationships between SPEI and large-scale climate indices, such as North Atlantic Oscillation (NAO), El Niño–Southern Oscillation (ENSO), Arctic Oscillation (AO), Indian Ocean Dipole (IOD) and Pacific Decadal Oscillation (PDO) were examined using cross-wavelet transform. The results showed that the SPEI in Poyang Lake Basin exhibited relatively stable quasi-periodic oscillation, with approximate quasi-3-year and quasi-6-year periods at the inter-annual scale and quasi-15-year and quasi-30-year periods at the inter-decadal scale from 1958 to 2017. Moreover, the Poyang Lake Basin experienced an insignificantly wetter trend as a whole at the annual and seasonal scales during the period of 1958–2017, except for spring, which had a drought trend. The special characteristics of the trend variations were markedly different in the basin. The areas in which drought was most likely to occur were mainly located in the Poyang Lake region, northwest and south of the basin, respectively. Furthermore, relationships between the drought and six climate indices showed that the drought exhibited a significant temporal correlation with five climate indices at restricted intervals, except for IOD. The dominant influences of the large-scale climate indices on the drought evolutions shifted in the Poyang Lake Basin during 1958–2017, from the NAO, Niño 3.4, and the Southern Oscillation Index (SOI) before the late 1960s and early 1970s, to the AO and PDO during the 1980s, then to the NAO, AO and SOI after the early 2000s. The NAO, AO and SOI exerted a significant influence on the drought events in the basin. The results of this study will benefit regional water resource management, agriculture production, and ecosystem protection in the Poyang Lake Basin.

Suggested Citation

  • Weilin Liu & Shengnan Zhu & Yipeng Huang & Yifan Wan & Bin Wu & Lina Liu, 2020. "Spatiotemporal Variations of Drought and Their Teleconnections with Large-Scale Climate Indices over the Poyang Lake Basin, China," Sustainability, MDPI, vol. 12(9), pages 1-18, April.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:9:p:3526-:d:350478
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    References listed on IDEAS

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    1. Laiquan Jin & Jiquan Zhang & Ruoyu Wang & Minghua Zhang & Yuhai Bao & Enliang Guo & Yongfang Wang, 2019. "Analysis for Spatio-Temporal Variation Characteristics of Droughts in Different Climatic Regions of the Mongolian Plateau Based on SPEI," Sustainability, MDPI, vol. 11(20), pages 1-21, October.
    2. Troy Sternberg, 2011. "Regional drought has a global impact," Nature, Nature, vol. 472(7342), pages 169-169, April.
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    2. Yueping Deng & Wenyu Jiang & Tianyu Zhang & Jing Chen & Zhi Wu & Yuanqing Liu & Xinyue Tao & Bo Liu, 2023. "Projection of Meteorological Dryness/Wetness Evolution Based on Multi-Model Scenarios in Poyang Lake Basin, China," Sustainability, MDPI, vol. 15(10), pages 1-15, May.
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    4. Fang Cui & Hua Wang & Zilin Shen & Yuanyuan Li & Siqiong Li & Xueqi Tian, 2023. "Physicochemical Properties and Environmental Effects of Suspended Sediment Particles in the Largest Freshwater Lake, China," Sustainability, MDPI, vol. 15(8), pages 1-14, April.

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